Search Documents

Search Again

Search Again

Refine Search

Publication Date
Clear

Refine Search

Publication Date
Clear
Organization
Organization
  • NIOSH
    RI 6829 Reaction Of Coal In Argon And Argon-Hydrogen Plasmas

    By Walter Kawa

    Coals of various rank were reacted by the Bureau of Nines in plasma jets generated from argon and argon-hydrogen mixtures containing up to 33 volume-percent hydrogen. Average plasma temperatures range

    Jan 1, 1966

  • NIOSH
    RI 8143 A Conceptual Model for the Role of Oxygen in Xanthate Adsorption on Galena

    By E. E. Maust

    The present work is part of an ongoing Bureau of Mines effort to provide a better understanding of the fundamental phenomena involved in sulfide flotation, the role of oxygen in xanthate adsorption be

    Jan 1, 1976

  • NIOSH
    RI 5868 Electrowinning Cerium-Group And Yttrium-Group Metals ? Summary And Introduction

    By E. Morrice

    This report of the Federal Bureau of Mines presents a laboratory procedure, with the requisite equipment, for electrowinning ingot (liquid) cerium metal from a fused-fluoride bath, the metal purity be

    Jan 1, 1961

  • NIOSH
    RI 5091 Caustic Soda Fusion Of Zirconium Ores ? Summary

    By H. L. Gilbert

    Zircon sand may be reacted with sodium hydroxide at 600° C. to form sodium zirconate and sodium silicate. Sodium zirconate is water insoluble and so may be washed free of sodium silicate. The sodium z

    Jan 1, 1954

  • NIOSH
    RI 3697 A Simple Device for Detecting Small Concentrations of Organic Halide Gases in the Atmosphere

    By G. W. Jones, R. E. Kennedy

    A simple , quick, and relatively accurate device is needed for determining the presence of very small concentrations of organic halide gases in various atmospheres . Such a device would enable safety

    Apr 1, 1943

  • NIOSH
    IC 7821 Mechanism Of The Synthesis Of Hydrocarbons From Carbon Monoxide And Hydrogen - From The Russian Report Of Y. T. Eidus

    Ten years ago we surveyed in "Uspekhi Khimii" the mechanism of the synthesis of hydrocarbons from CO and H2 (1).5 With new data obtained since then, mostly by Soviet researchers, our previous work (2)

    Jan 1, 1958

  • NIOSH
    RI 6662 Hydrogen Reduction Of Galena And Sphalerite

    By J. D. Spagnola

    The Bureau of Mines conducted research to obtain comparative data on the extent of reduction of galena and sphalerite with molecular hydrogen and with hydrogen from the thermal cracking of ammonia and

    Jan 1, 1965

  • NIOSH
    RI 5131 Estimate Of Known Recoverable Reserves And The Preparation And Carbonizing Properties Of Coking Coal In Overton County, Tenn. ? Summary And Conclusions ? Reserves

    By Lloyd Williams

    1. The investigation shows that the bed identified as Wilder in this report is the only bed in Overton County that has produced commercial coal and is the only bed in which coal reserves were estimate

    Jan 1, 1955

  • NIOSH
    IC 8266.1 Review and Evaluation of Silver-Production Techniques

    By B. H. Clemmons, C. H. Schack

    Extractive metallurgy techniques currently employed to recover silver from primary ores and secondary scrap were reviewed and evaluated to identify and delineate metallurgical problems whose resolutio

    Mar 1, 1965

  • NIOSH
    RI 6924 Equations For Calculating The Thermodynamic Properties Of Fluids, Including Those In The Two-Phase Region, From An Empirical Equation Of State

    By Robert E. Barieau

    General expressions for evaluating practically all the thermodynamic properties of a fluid from a single equation of state are derived. Most of the formulas are expressed in terms of the compressibili

    Jan 1, 1967

  • NIOSH
    Carbonizing Properties Of West Virginia Coals And Blends Of Coals From The Alma, Cedar Grove, Dorothy Powellton A, Eagle, Pocahontas And Beckley Beds ? Introduction

    By A. C. Fieldner

    In 1927 the Carbonization Committee of the American Gas Association proposed cooperation with the Bureau of Mines in the development of suitable methods for determining the carbonizing properties of A

    Jan 1, 1938

  • NIOSH
    RI 6470 Hydrogenation of New Mexico Coal at Short Residence Time and High Temperatures

    By Raymond W. Hiteshue, Sam Friedman, Martin D. Schlesinger

    The Bureau of Mines in cooperation with the El Paso Natural Gas Co. investigated the effect of high temperature and pressure at short residence times on the hydrogenation of a New Mexico coal to gaseo

    Jan 1, 1964

  • NIOSH
    Bulletin 150 Electrodeposition of Gold and Silver from Cyanide Solutions

    By S. B. Christy

    This report on the electrodeposition of gold and silver from cyanide solutions represents work that has occupied my time at intervals during the past 20 years. The investigation has been carried on si

    Jan 1, 1919

  • NIOSH
    Bulletin 119 Analyses of Coals Purchased by the Government During the Years 1908-1915

    By GEORGE S. POPE

    The Government of the United States annually expends approximately $8,000,000 for coal. Prior to 1906, this coal was purchased mainly on its reputation, or trade name, rather than under contracts spec

    Jan 1, 1916

  • NIOSH
    RI 4834 Preparation Characteristics Of Coal From Somerset County, Pa.

    By Wiliam L. Crentz

    The importance of Somerset County, Pa., as a coal producer is due in large measure to the presence reserves of low-volatile bituminous coals. Although many coal beds of minable thickness are present,

    Jan 1, 1951

  • NIOSH
    Preparation Characteristics Of Some Coals Available For The Synthetic Liquid Fuels Industry ? Introduction

    By Thomas Fraser

    WHEN the Bureau of Mines initiated the program of large-scale research and development in the field of synthetic liquid fuels authorized in the Synthetic Liquid Fuels Act of April 5, 1044, the Coal Pr

    Jan 1, 1950

  • NIOSH
    RI 3157 Washability Data On Certain Coal Beds Of Alabama With Special Reference To Sulphur Elimination ? Introduction

    By B. W. Gandrud

    This report, consisting mostly of float-and-sink data and washability curves, has been prepared in connection with an exhaustive study of coal preparation in Alabama conducted, by the U, S. Bureau of

    Jan 1, 1932

  • NIOSH
    RI 3157 Washability Data On Certain Coal Beds Of Alabama With Special Reference To Sulphur Elimination

    By B. W. Candrud

    This report, consisting mostly of float-and-sink data and washability curves, has been prepared in connection with an exhaustive study of coal preparation in Alabama conducted by the U. S. Bureau of M

    Jan 1, 1932

  • NIOSH
    Bulletin 124 Sandstone Quarrying in the United States

    By Oliver Bowles

    The term" sandstone" is applied to a rock composed of mineral grains smaller than pebbles, cemented together more or less firmly. "Conglomerate" is the name given to a rock composed of pebbles, or peb

    Jan 1, 1917

  • NIOSH
    RI 7159 Flotation Of Mica From Pegmatites Of Randolph County, Ala.

    By Ralph B. Adair

    The Bureau of Mines conducted laboratory and small-scale, continuous tests of weathered mica-pegmatite ores from Randolph County, Ala., to determine the feasibility of recovering commercial-grade mica

    Jan 1, 1968